Inverse of a function: f(x) = 7x+3 over 8

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MissTracy03
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Inverse of a function: f(x) = 7x+3 over 8

Postby MissTracy03 » Mon Aug 09, 2010 2:21 pm

Hello - I need help with the following problem. I was asked to find the inverse of: f(x) = 7x+3 over 8

If I’m doing this correctly, I would first replace f(x) with “y”, then I switched “y” and “x”. I believe my next step would be to multiply both sides by 8, correct? I’m blanking on the process, so I think that would give me 8x = 56x+24 over 64?

Your help is greatly appreciated.

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Martingale
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Re: Inverse of a function

Postby Martingale » Mon Aug 09, 2010 5:43 pm

MissTracy03 wrote:Hello - I need help with the following problem. I was asked to find the inverse of: f(x) = 7x+3 over 8

If I’m doing this correctly, I would first replace f(x) with “y”, then I switched “y” and “x”. I believe my next step would be to multiply both sides by 8, correct? I’m blanking on the process, so I think that would give me 8x = 56x+24 over 64?

Your help is greatly appreciated.













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